Fuel-economizer.



H. G. TUCKER.

FUEL ECONOMIZER.

APPLICATION'FILED Nov.6. 1913.

1 1 5 1 ,308. Patented Aug. 24, 1915.

2 SHEETS-SHEET COLUMBIA PLANQGRAPH co., WASHINGTON, D. r.

Patented Aug. 24, 1915 2 SHEETS-SHEET 2.

Itltll @Wilmma BIARRY G. TUCKER, OF CHICAGO, ILLINOIS.

rUEL-nooNoMIznR.

Specification of Letters Patent.

Patented Aug. 24:, 1915.

Application filed November 6, 1913. Serial No. 799,451.

To all "whom, it may concern:

Be it known that I, HARRY G. T UGKER, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certainnew and useful Improvements in'Fuel-l lconomizers, ofwhich the followingis a specification.

My invention relates to improvements in fuel economizers. I

One of the objects of my invention is to provide, a longitudinallydivided sectional device, to be placed within relatively, largebreechings or smoke fiues of furnaces, whereby to properly pre-heat andthen admit the required, or suitable volume, of air, or oxygen, to thefuel being consumed, to promote combustion and to hold in check, withinthe furnace, from the escaping gases of combustion, the resulting heatarising from such combustion, to thereby increase the heating efficiencyof the fuel.

Other and further objects of my invention will become readily apparentto persons skilled in the art from the consideration of the followingdescription when taken in conjunction with the drawings, wherein Figure1 shows a furnace to which my economizer is applied. Fig. 2 is anenlarged plan view of the device showing parts thereof and a flue insection. Fig. 3 isa longitudinal section, taken on line 3-3 of Fig. 2.Fig. f is a transverse section taken on line of Fig. 3. Fig. 5 is atransverse section taken on line 55 of Fig. 3.

In all the views the same reference characters are employed to indicatesimilar parts.

In an application filed by me September 19th, 1913 and ,'dentified bySerial No. 790,683 I have shown a similar device, to that disclosed inthis application, Withan exception that the economizer of this application is longitudinally divided into a plurality of independentsections, so that an economizer of proper capacity may be placed withina relatively large flue without making any piece thereof too heavy forconvenient transportation and handling.

Another, and'more specific object of the present invention is to sofashion the respective sections that they conveniently may be placedwithin a flue and will mutually hold themselves in their respectiveplaces by cooperating, engaging and holding projections.

As my former fully the theory,

application explains quite to which I ascribe the operation of mydevice, I will herein describe the present structure only, believingthat the same theory of operation is applicable to the presenteconomizer.

The economizer is divided into, three longitudinally divisible,separable, independ ent sections, 10, 11 and12. The terminal parts 10and 12 are substantial duplicates with theexception that one is adaptedfor right hand position and the other for left hand position, withreference to the intermediate section or sections.

' The three numbers are adaptable for lines of several different sizesby varying the lat- .eral dimensions of the intermediate sections toconform with the changed diameter of the fine. The three sectionsoperate upon the same principle and are capable of independentoperation. A greater number of intermediate sections may be used thanshown without departing from the spirit of my invention.

The large surfaces of the surrounding walls of each of the sectionsserves as means for exposing considerable heating surface effect to thesurrounding gases and as each of the sections are made independent andnon-communicating, the ingress of air into one is not disturbed bymovement of the air in the other. Furthermore the independence of eachsection prevents rotation, or other rapid movement of the air particlestherein as they are admitted into the respective sections, by theimpingement of air that may be coming into the adjoining section. It isvery desirable that the air, within the device, and each of them, be asquiescent as possible in order that its diffusion into the surroundinggases may be more completely and effectively accomplished.

I will specifically describesection 10 and indicate correspondingpartsof section 12 with the same referencecharacters with the addition of theexponent prime 13 is a rosette located on the outside of the flue 14.and provided with a curved cup portion 15 having a series ofperforations 16 to admit air into the device in relatively small streamsor separated currents. It is connected to the respective sections, 10 or12, as the case may be, through a throat 17, containing a passage way,18, into the portion 19, of the respective section. A baflie wall 20directs the air into the chamber 19, so that the rapid motion that wouldbe superinduced by its rush into the device, is

checked. The battle wall 20 deflects the air into the rearward portionof the chamber, as it comes through the opening 18, which then passesdown into the body part of the section, being heated by its contactwith'the surrounding walls thereof, until it passes around theobstruction 21 and out through perforations 22 provided in the obliquewall 24;. There are a number of small perforations 22 so that the air isdrawn from the device and admitted into the hot gases, within the flue,in a series of small streams. There is provided in each of the throats1717 of the respective sections, an opening 25 which lies near thesurface of the flue 14 for admission of the air that is in contact withthe flue surface. This opening is supplementary to the plurality ofopenings provided in the respective rosettes.

The sections 10 and 12 are provided with projections 26 which registerwith grooves formed between the ribs 27 on the central section 11, so asto hold the radially wedge shaped central section in proper registerwith its companion section and to hold it in,

place within the flue. The sections 10 and 12 are held in the flue, andthe rosettes 15 are secured thereto, by means of bolts 28 as clearlyshown in Fig. 4.

The central section 11 is provided wit an opening 29 overlain by a lip30 for ad mission of the air into said section. The air, passing throughan opening 31, strikes against a baflle plate 32 to check its move mentand to render it quiescent. The baflie plate 32 is part of the wallsurrounding an opening 33, to lend additional heating surfaces forimpingement of the incoming air. Another opening, 34 is also provided inthe central section, having a wall 35 adapted for the same purpose. Thewalls surrounding these openings are tapered with the smaller endsfacing so that the air when striking the wall 35 will be checked to someextent and at the same time it will be heated and will finally pass outthrough the plurality of openings 36 provided in the tapered wall 37 ofthe section 11.

The caps of the rosettes 15-15 are held in place on the main bodyportion of the respective sections by screw bolts 38 so that these capsmay readily be removed and access to the interior device may thus behad, if desired, without bodily moving the device from its positionwithin the flue.

The best results are attained, in the use of my device, when it isplaced to the side of the central, longitudinal axis of the flue, and itis immaterial whether the three sections are located in close proximityto each other or whether they are distributed further distances apartaround the interior of the flue. The present arrangement, however,produces more economical results in the construction and application ofthe device and answers every purpose.

Having described my invention what I claim is z- 1. A device of thecharacter described comprising a plurality of relatively long, separate,independent, hollow structures, each structure provided with a baffledair inlet and a plurality of small outlets, said structures adapted forlocation in a flue, and having their longitudinally disposed, contactingsurfaces substantially conforming to the inner surface of the flue wallsand in contact therewith; means for securing two of said structures tothe flue wall and means, provided on said two terminal structures tohold the intermediate structure in place. I

2. A device of the character described, comprising two substantiallyduplicate relatively long, separate, independent, hollow structures, oneadapted for right hand position and the other for left hand position;

means for holding said structures in place in a flue; an intermediatestructure held in place by means provided on each of the ter minalstructures, each said structure provided with a baffled air inlet and aplurality of small air outlets and means provided in each of thestructures for heating the incoming air.

In testimony whereof I hereunto set my handin the presence of twowitnesses.

HARRY TUCKER.

Gopies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents.

Washington, D. 0.

